Verification batch task aborted with message "Invalid Login Details".

Time-to-time I have not a connection to server termbase.  And I need to verify a project.  I disable Terminology Verification in the Project Settings and start  "Verify" batch tasks. But process abort with message "Invalid Login Details".  No other QA verificaton have been made.  Product Sdl Studio 2015 SR2. There wasn't this problem in the SDL Studio 2011.